Self-retaining oil nozzle

ABSTRACT

An oil nozzle assembly includes a nozzle body and a nozzle insert. The nozzle body includes a main portion, a tip portion, a collar, and a lip. The tip portion is connected to the main portion. The collar is positioned at an interface between the main portion and the tip portion. The lip extends radially outward from the tip portion and includes an outer diameter. The nozzle insert includes a sleeve, an endwall connected to the sleeve, an orifice, and a retention element. The orifice is disposed in the endwall and is fluidly connected to the tip portion of the nozzle body. The retention element extends radially inward from the sleeve. A portion of the retention element includes an inner diameter that is less than the outer diameter of the lip.

BACKGROUND

The present disclosure relates generally to nozzles, and moreparticularly to oil nozzles for use in gas turbine engines.

Within gas turbine engines, oil nozzles are used for distributinglubricating oil throughout bearing compartments. Oil nozzlesincorporated into the bearing compartment, and other gas turbine enginehousings, require flow testing before use. Disassembling compartments toperform flow testing can expose large and expensive parts to damage anddebris within the compartments. If parts become damaged, entire housingsand assemblies may require replacement.

Oil nozzles often include fasteners as large as or larger than thenozzles themselves for retaining the nozzles within the bearingcompartment. Oil nozzles with large fasteners often cannot be removedfrom bearing compartments without disassembling major engine modules dueto other engine components being in the path of extraction or spacerequirements for tooling to engage with the nozzle fasteners.

SUMMARY

An oil nozzle assembly includes a nozzle body and a nozzle insert. Thenozzle body includes a main portion, a tip portion, a collar, and a lip.The tip portion is connected to the main portion. The collar ispositioned at an interface between the main portion and the tip portion.The lip extends radially outward from the tip portion and has an outerdiameter. The nozzle insert includes a sleeve, an endwall connected tothe sleeve, an orifice, and a retention element. The orifice is disposedin the endwall and is fluidly connected to the tip portion of the nozzlebody. The retention element extends radially inward from the sleeve. Aportion of the retention element has an inner diameter that is less thanthe outer diameter of the lip.

An oil nozzle assembly includes a nozzle body and a nozzle insert. Thenozzle body includes a main portion, a tip portion, and a lip. The tipportion is connected to the main portion. The lip extends outwards fromthe tip portion and has an outer width. The nozzle insert includes asleeve, an endwall connected to the sleeve, an orifice, and a retentionelement. The orifice is disposed in the endwall and is fluidly connectedto the tip portion of the nozzle body. The retention element extendsinward from the sleeve. A portion of the retention element has an innerwidth that is less than the outer width of the lip. The nozzle insert isdisposed onto the tip portion of the nozzle body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is an isometric view of an oil nozzle assembly with a nozzleinsert and a nozzle body.

FIG. 1B is a cross-sectional view of the nozzle insert and nozzle bodytaken along line 1-1 from FIG. 1A.

FIG. 1C is an exploded isometric view of the nozzle body and the nozzleinsert of FIG. 1A, with the nozzle insert shown in a cross-section view.

FIG. 1D is another exploded isometric view of the nozzle body and thenozzle insert of FIG. 1A.

FIG. 1E is an exploded isometric view of the nozzle body and the nozzleinsert of FIG. 1A, with the nozzle insert shown in a cross-section view.

FIG. 2A is an isometric view of another oil nozzle assembly with anozzle insert and a nozzle body.

FIG. 2B is a cross-sectional side view of the nozzle insert and nozzlebody taken along line 2-2 from FIG. 2A.

FIG. 2C is an exploded side view of the nozzle body and the nozzleinsert of FIG. 2A.

FIG. 2D is an exploded isometric view of the nozzle body and the nozzleinsert of FIG. 2A.

FIG. 2E is another exploded isometric view of the nozzle body and thenozzle insert of FIG. 2A, with the nozzle insert shown in across-section view.

FIG. 3 is a cross-sectional view of an oil nozzle in a bearingcompartment.

DETAILED DESCRIPTION

FIGS. 1A-1E show different aspects of oil nozzle assembly 10 with nozzlebody 12 and nozzle insert 14, and are discussed as a group below. FIGS.1A and 1B show nozzle insert 14 disposed onto nozzle body 12 and FIGS.1C, 1D, and 1E are exploded views of nozzle body 12 and nozzle insert14. FIG. 1B is a cross-sectional view of nozzle body 12 and nozzleinsert 14 taken along line 1-1 from FIG. 1A.

FIG. 1A is an isometric view of oil nozzle assembly 10 with nozzle body12 and nozzle insert 14. Nozzle body 12 includes main portion 16, tipportion 18, collar 20, and anti-rotation feature 22. Tip portion 18 ofnozzle body 12 is connected to main portion 16 and is located on adistal end of nozzle body 12. Main portion 16 and tip portion 18 can bemade of one continuous piece of material or can be separately attachedto one another. Tip portion 18 of nozzle body 12 has outer diameterD_(O).

Collar 20 is positioned at an interface between main portion 16 and tipportion 18. Collar 20 can also include lip 24 which extends radiallyoutward from tip portion 18. In FIG. 1A, lip 24 extends the entirelength of tip portion 18 of nozzle body 12. Nozzle body 12 includes apassage (not shown in FIG. 1A) that extends through and fluidly connectsmain portion 16 and tip portion 18. Anti-rotation feature 22 includes atab of solid material extending outward from nozzle body 12.Anti-rotation feature 22 juts out from nozzle body 12 so as to engagewith nozzle insert 14 and prevent nozzle insert 14 from rotating aboutnozzle body 12. In other non-limiting embodiments, anti-rotation feature22 can be located on main portion 16 of nozzle body 12.

In one non-limiting embodiment, main portion 16 and tip portion 18 areformed from a single piece of material and are integrally formed. Inother non-limiting embodiments, main portion 16 and tip portion 18 canbe separate elements connected together through chemical or mechanicalattachment. Nozzle body 12 can include a metallic material such asnickel, titanium, steel or aluminum, as well as non-metallic materials.Additionally, nozzle body 12 is shown in FIG. 1A to include acylindrical shape with a circular cross-section, but in othernon-limiting embodiments can also include other geometric shapes such asa rectangle or oval.

Nozzle insert 14 includes sleeve 26, endwall 28, orifice 30, andretention element 32. Nozzle insert 14 can include a metallic materialsuch as nickel, titanium, steel or aluminum, as well as non-metallicmaterials. In one non-limiting embodiment, nozzle insert 14 can beformed through layer-by-layer additive manufacturing. Nozzle insert 14can also be formed through subtractive manufacturing, or by attachingseparate pieces of material together to form nozzle insert 14. Sleeve 26includes a tubular piece of solid material extending in acircumferential direction around nozzle insert 14. In one non-limitingembodiment, sleeve 26 includes an interrupted surface that includes aplurality or cutouts or openings in sleeve 26 which add flexibility tosleeve 26 enabling retention elements 32 to flex outwardly and engagewith lip 24. Endwall 28 includes a flat circular disk of solid material.Endwall 28 is connected to sleeve 26 and is positioned at an end ofsleeve 26. Orifice 30 includes a hole or bore disposed in endwall 28. Inother non-limiting embodiments, orifice 30 can include a non-circularshape as well as being configured in a position not normal to endwall28.

Retention element 32 includes a tab of solid material. Retention element32 is connected to sleeve 26 and extends radially inward from sleeve 26.In one non-limiting embodiment, sleeve 26, endwall 28, and retentionelement 32 are connected as and can be formed out of a single piece ofmaterial, such as through additive or subtractive methods ofmanufacturing. In other non-limiting embodiments, sleeve 26, endwall 28,and retention element 32 can be separate elements connected togetherthrough chemical or mechanical attachment. A portion of retentionelement 32 has inner diameter D_(I) that is less than outer diameterD_(O) of tip portion 18 in an un-altered state such as for example whenretention element 32 is not pulled away from nozzle body 12. As can beseen in FIG. 1C, retention element 32 circumferentially extends along aportion of nozzle insert 14.

As can be seen in FIG. 1B, nozzle body 12 includes first bore 34 andnozzle insert 14 includes plug 36, second bore 38, and O-ring 40. Firstbore 34 includes a channel extending through nozzle body 12 providingfor the passage of a fluid through nozzle body 12. Plug 36 includes asolid piece of material that extends down into and through a center ofnozzle insert 14. Second bore 38 includes a channel running through plug36 of nozzle insert 14 providing for the passage of a fluid throughnozzle insert 14. Together, first bore 34 and second bore 38 form achannel extending through main portion 16 of nozzle body 12 and tipportion 18 of nozzle insert 14. Second bore 38 opens up into orifice 30in endwall 28 and fluidly connects to the channel formed by first bore34 and second bore 38. O-ring 40 includes a ring of solid materialextending circumferentially around plug 36 of nozzle insert 14. O-ring40 creates a seal between plug 36 of nozzle insert 14 and nozzle body 12preventing the passage of fluid past O-ring 40. In other non-limitingembodiments, oil nozzle assembly 10 can include zero or more than oneO-ring 40 along an interface between nozzle body 12 and nozzle insert14.

As shown in FIGS. 1A-1B, nozzle insert 14 is disposed onto and coverstip portion 18 of nozzle body 12. During operation of oil nozzleassembly 10, oil is drawn through nozzle body 12 from an oil bearinghousing that nozzle body 12 is attached to, into orifice 30 of nozzleinsert 14, through nozzle insert 14, and directed out of nozzle insert14. The oil directed out of nozzle insert 14 enters into an oil bearingcompartment to lubricate a bearing or set of bearings, for example in agas turbine engine or other machines which include bearing compartments.

Retention element 32 is in contact with collar 20 and lip 24 of nozzlebody 12. In FIGS. 1A-1B, retention element 32 is positioned further awaythan lip 24 of nozzle body 12 from an end of tip portion 18 of nozzlebody 12 that is opposite of main portion 16. The contact betweenretention element 32 and lip 24 prevents axial displacement of retentionelement 32 and nozzle insert 14 in a direction towards a distal end oftip portion 18 of nozzle body 12 due to the radial overlap of retentionelement 32 and collar 20 of nozzle body 12. Retention element 32 ofnozzle insert 14 engages with lip 24 of nozzle body 12 such that lip 24stops retention element 32 from displacement in a direction towards anend of tip portion 18 of nozzle body 12 that is opposite from mainportion 16.

The oil nozzle assembly 10 includes a snap-on design allowing forinstallation and removal of nozzle insert 14 without the need ofseparate fasteners for attaching nozzle insert 14 to nozzle body 12.Removing the need for separate fasteners eliminates the requirement forextra space to remove nozzle insert 14 from an oil bearing compartment.During testing phases of oil nozzle assembly 10, ease of installationand removal is greatly increased allowing for faster change-overs duringoil nozzle testing. Replacement of damaged nozzles is also made easierby enabling just nozzle insert 14 to be replaced as opposed to needingto remove the entire nozzle body 12 from the bearing compartment, suchas is needed with nozzles including removable fasteners or nozzles thatinclude a nozzle insert and nozzle body built as a single piece.

For removal of nozzle insert 14 from nozzle body 12, a small tool caninteract with retention element 32 to pull or draw retention element 32radially outwards from nozzle body 12. When retention element 32 isdrawn away from nozzle body 12 such that inner diameter D_(I) ofretention element 32 is larger than outer diameter D_(O) of tip portion18, retention element 32 disengages from lip 24 of nozzle body 12 andnozzle insert 14 can be pulled off of nozzle body 12. Oil nozzleassembly 10 does not include a removable fastener which eliminates theneed for large clearances surrounding nozzle insert 14 for adequatespace for access to removable fasteners. Without the need for extraspace to remove fasteners, oil nozzle assembly 10 allows for tightertolerances and spacing between components within an oil bearing assemblythat houses oil nozzle assembly 10.

FIGS. 2A-2E show different aspects of oil nozzle assembly 110 withnozzle body 112 and nozzle insert 114, and are discussed as a groupbelow. FIGS. 2A-2B show nozzle insert 114 disposed onto nozzle body 112and FIGS. 2C-2E are exploded views of nozzle body 112 and nozzle insert114. FIG. 2B is a cross-sectional view of nozzle body 112 and nozzleinsert 114 taken along line 2-2 from FIG. 2A.

FIG. 2A is an isometric view of oil nozzle assembly 110 with nozzle body112 and nozzle insert 114. Nozzle body 112 includes main portion 116,tip portion 118, collar 120, and lip 124. Tip portion 118 of nozzle body112 is connected to main portion 116 and is located on a distal end ofnozzle body 112. Main portion 116 and tip portion 118 can be made of onecontinuous piece of material. Collar 120 is positioned at an interfacebetween main portion 116 and tip portion 118. Tip portion 118 includeslip 124. Lip 124 includes a solid piece of material which extendsradially outward from tip portion 118. Lip 124 is located on a distalend of tip portion 118 from nozzle main portion 116 of nozzle body 112.Lip 124 forms channel 142 in tip portion 118 of nozzle body 112. Lip 124has outer width W_(O). Nozzle body 112 also includes O-ring 140positioned between tip portion 118 of nozzle body and nozzle insert 114.

Nozzle insert 114 includes sleeve 126, endwall 128, orifice 130,retention element 132, and compliant features 144. Sleeve 126 includes atubular piece of solid material extending in a circumferential directionaround nozzle insert 114. Endwall 128 includes a flat circular disk ofsolid material. Endwall 128 is connected to sleeve 126 and is positionedat an end of sleeve 126. Orifice 130 includes a hole or bore disposed inendwall 128. Retention element 132 includes a tab of solid material.Retention element 132 is connected to sleeve 126 and extends radiallyinward from sleeve 126. Retention element 132 has inner width W₁. Asshown in FIG. 2E, retention element 132 can include tab 146. Tab 146 ofnozzle insert 114 includes first segment 148, second segment 150, andthird segment 152. First segment 148, second segment 150, and thirdsegment 152 include solid pieces of material extending radially inwardsfrom inner sidewall 154 of sleeve 126.

First segment 148 is connected to inner sidewall 154 of sleeve 126.Second segment 150 is connected to first segment 148. Second segment 150is longer than first segment 148. First angle θ₁ is formed between firstsegment 148 and second segment 150. In one non-limiting embodiment,first angle θ₁ can include an angle of 90°. Third segment 152 isconnected to second segment 150. Third segment 152 is shorter thansecond segment 150. Second angle θ₂ is formed between second segment 150and third segment 152. In one non-limiting embodiment, second angle θ₂can include an angle of 90°. In other non-limiting embodiments, firstand second angles θ₁ and θ₂ can include angles less than or greater than90°.

Compliant features 144 include strips of solid material extending in anaxial direction from sleeve 126 in a direction opposite from endwall128. Each of compliant features 144 includes first portion 156 andsecond portion 158. First portion 156 and second portion 158 form angleθ_(CF). In one non-limiting embodiment, angle θ_(CF) between firstportion 156 and second portion 158 can be greater than 90°. In othernon-limiting embodiments, compliant features 144 can be curvedthroughout the entire length of each of compliant features 144.Compliant features 144 can also include a series of spring elements suchas leaf springs.

In one non-limiting embodiment, sleeve 126, endwall 128, retentionelement 132, and compliant features 144 are connected as and can beformed out of a single piece of material, such as through additive orsubtractive methods of manufacturing. In other non-limiting embodiments,sleeve 126, endwall 128, and retention element 132 can be separateelements connected together through chemical or mechanical attachment.Nozzle insert 114 with sleeve 126, endwall 128, and retention element132 can include a metallic material such as nickel, titanium, steel oraluminum, as well as non-metallic materials.

Channel 142 of tip portion 118 on nozzle body 112 receives retentionfeature 132 of nozzle insert 114. As shown in FIG. 2B, second segment150 of retention element 132 is positioned in channel 142. Inner widthW_(I) of retention feature 132 has a distance that is less than outerwidth W_(O) of lip 124 such that lip 124 stops retention feature 132from displacement in a direction towards an end of tip portion 114opposite from main portion 116.

As shown in FIG. 2A-2B, compliant features 144 are compressed betweencollar 120 of nozzle body 112 and sleeve 126 of nozzle insert 114.Compliant features 144 exert a spring force onto collar 120 of nozzlebody 112 biasing nozzle insert 114 in a direction towards an end of tipportion 118 of nozzle body 112.

Oil nozzle assembly 110 allows for installation and removal of nozzleinsert 114 onto and from nozzle body 112 through a pressing and twistingprocess. During installation of nozzle insert 114 onto nozzle body 112,nozzle insert 114 is brought onto nozzle body 112 such that tip portion118 of nozzle body 112 is inserted into sleeve 126 of nozzle insert 114.As tip portion 118 is fully inserted into nozzle insert 114, compliantfeatures 144 are brought into contact with collar 120 of nozzle body112. As compliant features 144 are brought into contact with collar 120,at least a portion of tab 146 of nozzle insert 114 becomes axiallyaligned with a portion of lip 124 of nozzle body 112. In FIGS. 2A-2E,circumferential alignment can be defined as elements occupying the samecircumferential position along a circumferential direction.Additionally, axial alignment can be defined as elements occupying thesame axial position along an axial direction. After compliant features144 come into contact with collar 120, nozzle insert 114 is pushedfurther towards main portion 116 of nozzle body 112 to compress and bendcompliant features 144 thereby allowing sleeve 126 to be drawn closertowards collar 120 than if compliant features 144 were not compressed.As sleeve 126 is drawn closer to collar 120, tab 146 of nozzle insert114 is drawn axially towards collar 120 and out of axial alignment withlip 124 of nozzle body 112. When tab 146 and lip 124 are brought out ofaxial alignment, nozzle insert 114 can be twisted to slide tab 146 intocircumferential alignment with lip 124.

In particular, when first segment 148 of tab 146 is brought out of axialalignment with lip 124, nozzle insert 114 can be twisted to slide firstsegment 148 circumferentially past lip 124. Once first segment 148 isslid past lip 124, compliant features 144 push nozzle sleeve 126 awayfrom main portion 116 of nozzle body 112, and second segment 150 isbrought into contact with lip 124. As second segment 150 is brought intocontact with lip 124, first segment 148 and third segment 152 of tab 146are brought into axial alignment with lip 124 and into a locked state.

In this locked state, tab 146 and lip 124 cannot be moved rotationallyrelative to each other unless nozzle insert 114 is pushed towards nozzlebody 112. As nozzle insert 114 is pushed down into nozzle body 112,compliant features 144 compress and first and third segments 148 and 152of tab 146 are drawn out of axial alignment with lip 124 therebyallowing nozzle insert 114 to rotate relative to nozzle body 112. Nozzleinsert 114 can then be rotated relative to nozzle body 112 such that tab146 is completely out of circumferential alignment with lip 124 therebyallowing nozzle insert 114 to be drawn away from and off of tip portion116 of nozzle body 112.

The “locking” capability of oil nozzle assembly 110 allows nozzle insert114 to stay attached onto nozzle body 112 during use of oil nozzleassembly 110 without coming loose or dislodged. Only upon a firsttranslational and a second rotational application of force to nozzleinsert 114 relative to nozzle body 112 can nozzle insert 114 be removedfrom nozzle body 112.

Oil nozzle assembly 110 does not include a removable fastener, whicheliminates the need for large clearances surrounding nozzle insert 114for adequate space for access to removable fasteners. Without the needfor extra space to remove fasteners, oil nozzle assembly 110 allows fortighter tolerances and spacing between components within an oil bearingassembly that houses oil nozzle assembly 110.

FIG. 3 is a cross-sectional view of bearing compartment 200 with bearingwall 202 and oil nozzle 204. Bearing compartment 200 includes a portionof an engine, for example a gas turbine engine, which houses bearings.Bearing wall 202 includes a wall within bearing compartment 200 forholding together a structure of bearing compartment 200. Oil nozzle 204includes a nozzle for the distribution of a fluid within bearingcompartment 200, for example lubricating oil. Oil nozzle can include oilnozzle assemblies 10 or 110 from FIGS. 1A-2E.

Oil nozzle 204 is mounted into bearing wall 202. Oil nozzle 204distributes oil to bearing compartment 200. Oil nozzle 204 is fluidlyconnected to a source of oil. Bearing compartment 200 includes tightspace with small clearances. Using oil nozzle 204, which can be oilnozzle assemblies 10 or 110, in bearing compartment 200 doesn't requirethe space needed to accommodate removable fasteners or space for toolsto engage with removable tools, which reduces the time and energy forreplacement and removal of oil nozzle 204 from bearing compartment 200.

Discussion of Possible Embodiments

The following are non-exclusive descriptions of possible embodiments ofthe present invention.

An oil nozzle assembly can include a nozzle body and/or a nozzle insert.The nozzle body can include a main portion, a tip portion, a collar,and/or a lip. The tip portion can be connected to the main portion. Thecollar can be positioned at an interface between the main portion andthe tip portion. The lip can extend radially outward from the tipportion and can include an outer diameter. The nozzle insert can includea sleeve, an endwall connected to the sleeve, an orifice, and/or aretention element. The orifice can be disposed in the endwall and/or canbe fluidly connected to the tip portion of the nozzle body. Theretention element can extend radially inward from the sleeve. A portionof the retention element can include an inner diameter that can be lessthan the outer diameter of the lip.

The assembly of the preceding paragraph can optionally include,additionally and/or alternatively, any one or more of the followingfeatures, configurations and/or additional components.

The nozzle insert can be disposed onto the tip portion of the nozzlebody such that the lip of the nozzle body prevents axial displacement ofthe retention element in a direction towards an end of the tip portionof the nozzle body opposite of the main portion.

The tip portion of the nozzle body can include a channel for receivingthe retention element of the nozzle insert.

The nozzle insert can further comprise a plurality of compliant featuresthat can extend from the sleeve in an axial direction from the sleeve ina direction opposite from the endwall.

The plurality of compliant features can be compressed between the collarof the nozzle body and the sleeve of the nozzle insert.

The plurality of compliant features exerts a spring force onto thecollar of the nozzle body biasing the nozzle insert in a directiontowards an end of the tip portion of the nozzle body.

An oil nozzle assembly can include a nozzle body and/or a nozzle insert.The nozzle body can include a main portion, a tip portion, and/or a lip.The tip portion can be connected to the main portion. The lip can extendoutwards from the tip portion and can include an outer width. The nozzleinsert can include a sleeve, an endwall connected to the sleeve, anorifice, and/or a retention element. The orifice can be disposed in theendwall and/or can be fluidly connected to the tip portion of the nozzlebody. The retention element can extend inward from the sleeve. A portionof the retention element can include an inner width that can be lessthan the outer width of the lip. The nozzle insert can be disposed ontothe tip portion of the nozzle body.

The assembly of the preceding paragraph can optionally include,additionally and/or alternatively, any one or more of the followingfeatures, configurations and/or additional components.

The retention element can be positioned further away from an end of thetip portion of the nozzle body that can be opposite of the main portionthan the lip of the nozzle body.

The retention element of the nozzle insert can engage with the lip ofthe nozzle body, wherein the lip can stop the retention element fromdisplacement in a direction towards an end of the tip portion of thenozzle body.

The retention element comprises a first segment that can be connected toan inner sidewall of the sleeve, a second segment that can be connectedto the first segment, wherein the second segment can be longer than thefirst segment, and a third segment that can be connected to the secondsegment, wherein the third segment can be shorter than the secondsegment.

The tip portion on the nozzle body can include a channel formed by thelip for receiving the retention element of the nozzle insert, and/orfurther wherein the second segment of the retention element can bepositioned in the channel.

The nozzle insert further comprises a plurality of compliant featuresextending in an axial direction from the sleeve in a direction oppositefrom the endwall, wherein each of the plurality of compliant featurescomprises a first portion and a second portion.

The plurality of compliant features can be compressed between the collarof the nozzle body and the sleeve of the nozzle insert.

The plurality of compliant features can exert a spring force onto thecollar of the nozzle body biasing the nozzle insert in a directiontowards an end of the tip portion of the nozzle body.

While the invention has been described with reference to an exemplaryembodiment(s), it will be understood by those skilled in the art thatvarious changes may be made and equivalents may be substituted forelements thereof without departing from the scope of the invention. Inaddition, many modifications may be made to adapt a particular situationor material to the teachings of the invention without departing from theessential scope thereof. Therefore, it is intended that the inventionnot be limited to the particular embodiment(s) disclosed, but that theinvention will include all embodiments falling within the scope of theappended claims.

1. An oil nozzle assembly comprising: a nozzle body comprising: a mainportion; a tip portion connected to the main portion, the tip portionincluding a lip that has an outer diameter; and a collar positioned atan interface between the main portion and the tip portion; a nozzleinsert comprising: a sleeve; an endwall connected to the sleeve; aplurality of compliant features extending from the sleeve in an axialdirection from the sleeve in a direction opposite from the endwall,wherein the plurality of compliant features is compressed between thecollar of the nozzle body and the sleeve of the nozzle insert; anorifice disposed in the endwall, wherein the orifice is fluidlyconnected to the tip portion of the nozzle body; and a retention elementextending radially inward from the sleeve, wherein a portion of theretention element includes an inner diameter that is less than the outerdiameter of the lip, and wherein the retention element extends less thana full circumference of the sleeve.
 2. The oil nozzle assembly of claim1, further wherein the nozzle insert is disposed onto the tip portion ofthe nozzle body such that the lip of the tip portion prevents axialdisplacement of the retention element in a direction towards an end ofthe tip portion of the nozzle body that is opposite of the main portion.3. The oil nozzle assembly of claim 1, wherein the tip portion of thenozzle body includes a channel for receiving the retention element ofthe nozzle insert.
 4. (canceled)
 5. (canceled)
 6. The oil nozzleassembly of claim 1, wherein the plurality of compliant features exertsa spring force onto the collar of the nozzle body biasing the nozzleinsert in a direction towards an end of the tip portion of the nozzlebody.
 7. (canceled)
 8. (canceled)
 9. (canceled)
 10. (canceled) 11.(canceled)
 12. (canceled)
 13. (canceled)
 14. (canceled)